package ooday03;

public class InterfaceDemo {
    public static void main(String[] args) {

    }
}



interface Inter{
    public abstract void show();
    void test();
    //void say(){} 编译错误，抽象方法不能有方法体
}

//演示接口的实现
interface Inter1{
    void show();
    void test();
}


interface Inter2{
    void show();
}

interface Inter3{
    void test();
}

abstract class Boo{
    abstract void say();
}
class Aoo implements Inter1 {
    public void show(){}
    public void test(){}
}

class Coo extends Boo implements Inter2, Inter3 {
    public void show(){};
    public void test(){};
    void say(){}
}
